.backtop {
  position: fixed;
  display: flex;
  justify-content: center;
  align-items: center;
  bottom: 10px;
  right: 10px;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  cursor: pointer;
  background-color: rgba(0, 0, 0, 0.45);
  transition: all 200ms;
}

.hide {
  height: 0 !important;
  transition: all 200ms;
}

.backtop:hover {
  background-color: rgba(0, 0, 0, 0.85);
}
